I've never had any instruction in 'building' techniques; I just look at something and try to imagine how it's done. Building isn't exactly brain surgery, and so far it's worked.
One of my favourite jobs in recent years was the construction of the decorative Génoise on our 'tower'. It's an essential element in local buildings, and needs to be done correctly; you'd hardly believe some of the appalling work I've seen by so-called professionals. Why they weren't made to re-do them, I cannot imagine.
Building is fun. One can build almost anything with just a weighted string, a level, a ladder, and a trowel. With that basic kit, the Pyramids were built.
This (above) is that same strip of Génoise today. I'm quite proud of it; I look at it and think "I did that".